Portable crematory.



No. 800,178, v PATENTBD SEPT. 26, 1905.

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INVENTOR v ATTQRNEY UNITED srarns rgrsr orn on.

FRED P. SMITH, OF NEW YORK, N. Y., ASSIGNOR TO THE MUNICIPAL ENGINEERING COMPANY, NEW YORK, N. Y., A CORPORATION or DELAWARE.

PORTABLE CREIVIATORY.

Specification of'Letters Patent.

Patented Sept. 26, 1 905.

Application filed. May 5, 1904. Serial No. 206,436.

To all w/wnt it nuty concern:

Be it known that I, FRED P. SMITH, a citizen of the United States, and a resident of the city, county, and State of, New York, have invented a new and useful Improvement in Portable Crematories, of which the following is a full description.

The object of my invention is to construct a portable crematory which may be erected at any place and so put together that its parts may be separated and the Crematory taken apart for removal when required. It is also arranged so that it will, be outwardly cool and kept so by the introduction of cool air between its outer walls. v

The drawings accompanying this application illustrate the invention, of which Figure 1 is a vertical section of the crema- .tory, showing the interior thereof with its grates; Fig. 2, a longitudinal sectional plan of the same on line 2 2 of Fig. 1; Fig. 3, a front elevation of the crematory; Fig. 4, a vertical section on line 4 40f Figs. 1 and 3, showing the chimney and its communication with the crematory; Fig. 5, another side section taken on line 5 5 of Fig. 3.

Within the furnace are shown a series of rotatable hollow grate-bars 1 1, which are located to receive garbage or refuse matter from the dump-holes 2 2. Below this grate is another 3 3 also composed of hollow and rotatable grate-bars. On either side of this grate and upon a lower level are located the grates 4 and 5, each composed of hollow bars and rotatable.

The matter falling upon the upper grate 1 is at suitable times dropped upon grates 3, 4, and 5 by rotating the bars, the material passing between them as they are turned. A portion of this matter falling .upon grate 3 may be swept or pushed olf upon 4 and 5, as occasion requires.

The walls of the crematory are double on thesides and back, the outer wall being spaced from the inner one to provide an air-space 6 between them, and these walls are so arranged and jointed together that they may at all times be taken apart, the bars taken out, and the whole apparatus removed to another locality. In the space between the walls of the crematorythe air from outside enters through the openings 7 and keeps the'outer walls cool, preventing the radiation of heat outwardly.

of separate and distinct parts.

Between the grate 4 and the ash-pit 8 is located a hollow partition 9, which separates the grate from the ash-pit. The cool air entering the space in this hollow partition escapes into the ash-pit 8 through the openings 10. Another hollow partitionll is located between the ash-pit 8 and the grate 5, and the cool air from the space between the walls of this partition enters the ash-pit 8 through an opening in its inner wall. The opening 12' through the wall 11 is a passage-wayfor the products of combustion. A chimney 13 draws off from the crematory theseproducts of combustion. There is an upper passage-way 14 to the chimney and also a lower one 15. In the upper one is placed a damper 16. This damper may be opened or closed to direct the course of the products of combustion to the chimney. When a fire is built on grates 4 and 5 or either of them and the damper 16 is open, the course of the flame and products of combustion is upward and passes through theupper grate 1 and the material thereon direct to the chitinney through the passage 14. When the damper 16 is closed, the draft of the chimney is downward through upper grate 1 and upward through grates 4 and 5 intotheash-pit 8, through the opening 12, and out through the lower passage 15 into the chimney.

-When the matter on grate 1 is in proper condition, it is dumped upon grates 3, 4, and 5 by turning the rotatable bars and a fresh supply of matter dropped upon grate 1 through the dump-ports 2.

The ends of the hollow grate-bars arejournaled in the inner wall of the crematory, as shown at 17 Figs. 4 and 5, and the air entering through the bars passes into the space be-' tween the walls of the crematory and is drawn off by the chimney, together with the air from without. combustion from the grates and furnish oxygen for more complete combustion. The openings 18, as shown on Fig. 2, furnish air for combustion.

The apparatus is constructed in sections to be taken apart. In Fig- 1 joints are shown at a, where the upright is seated in a socket. This upright piece extends to B at the top.

D. Joints are also shown at e, f, and g, Fig. 1. In the front the device is also composed For example,

A On the left the same thing is shown at c and the top plates h [it into the frame over the door-frame it. The two pieces on and wars provided With-corresponding semicircular apertures 0 and when placed together furnish a seat and journal for the ends of the gratebars, as shown in Fig. 1. The same construction may be traced with the grates 3, 4- and 5, and Fig. 1 shows thelines running through the front and the adjustment of the various parts.

The device is compactly and strongly built. It may be approached at all times without discomfort from heat. It furnishes an abundant supply of partly-warmed fresh air for combustion, has no smell, may be readily dismembered, and taken from place to place. It emits no foul odors and the combustion is as nearly perfect as possible.

What I claim is 1. A crematory, having two walls on its sides and back, spaced apart to provide an airspace between them, the outer wall provided with apertures, to admit air from without into the space between the walls, in combination with one or more grates, located at different levels in the erematory, and composed of hollow rotatable bars, openings through the inner wall to admit air from the air-space into the crematory and means for inducing an up or down draft for the passage of the products of combustion.

2. A crematory having two walls on its sides and back, spaced apart to provide an airspace between them, the outer wall provided with openings to admit air from without into the air-space, in combination with one or more grates, composed of hollow, rotatable bars, having their inner ends jonrnaled in the inner wall of the crematory, to discharge the air passing through the bars into the air-space between the walls, and openings through the inner wall to discharge the air from the airspace into the crematory.

3. Acrematory provided with a double wall on the sides and back, said walls spaced apart to provide an air-space between the walls, in combination with one or more grates for supporting refuse matter, consisting of hollow rotatable bars having their front ends projecting through the walls of the crematory and their rear endsjourna-led in the inner wall of the casing, openings in the outer wall of the casing to admit air to the air-space, and openings through the inner wall, to adniitair from the air-space into the crematory, said walls constructed in detachable sections for putting up and taking apart as required.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

FRED 1. SMITH.

Vitnesses:

Dono'rnv M. CHILD, B. C. SPENCER. 

